Forgotten Sea is an RPG mobile game with a maritime theme. It features a particularly rich variety of crew and NPC types. Each crew member has different requirements and rules for unlocking. So, how do you unlock the fourth crew member in Forgotten Sea? Each crew member has a different skill system and auxiliary role, which can help players successfully complete tasks during their voyages. They can also gain affinity with each other.

Currently, the game mainly divides crew roles into three types, each with a completely different position within the team. They also possess many active and passive skills. To unlock the 4th crew member, you first need to find the designated NPC in the Sea Paradise. Here, you can use adventure stamps or special currency for exchange. The types of crew members available are very diverse; for example, the method of exchanging each type of crew member and the required number of adventure stamps are all completely different.

Secondly, there are a lot of NPC roles. When unlocking the 4th crew member, you must align with the affinity system. This system specifies dedicated NPC roles, and after establishing a trust relationship with them, you can gradually unlock them. Only when the affinity reaches a certain level can you receive the other's help and care. You can interact according to specific requirements or complete certain task operations, both of which can increase the affinity between you and the NPCs.

Finally, the game regularly pushes out various activities and daily tasks. Once players complete the maritime cooperation tasks, they can use a large number of coins to exchange for crew members. There are also rich and diverse special plot tasks. After completing the main storyline, interacting with many NPCs can unlock more hidden crew member tasks. Defeating all the boss monsters in these dungeons will allow you to obtain crew members, and you can also successfully deliver them. The game presents a very rich variety of dungeon tasks, and after completing each one, you will receive endless surprises. Some high-difficulty dungeon tasks may present a challenge during the process, but using your wisdom to complete them will allow you to easily unlock the 4th crew member.

This is a detailed introduction on how to unlock the 4th crew member in Forgotten Sea. Initially, when the player starts, they will only see three basic crew member roles, each with a unique positioning system and skill set. If the player wants to unlock the 4th crew member, they need to complete the corresponding task challenges.